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The main structure of the lever is relatively complex, and Zhu Cixuan did research on this aspect in his previous life.

What he admires most is the Vaubon-style bastion. The main structures of Vaubon-style bastion include solid bastion, hollow bastion, chest wall, central dike, concave bastion, triangular bastion, hidden road, garrison, and inclined dwelling. This bastion is radial in star shape and will be covered with a thick layer of soil on the surface to avoid secondary damage caused by enemy artillery jumps.

The solid basin is a mound platform with a chest wall on the fort. After the chest wall, it is often equipped with cannons as the main firepower output of the basin. The so-called central dike refers to the middle part of the basin, similar to the city wall of the Ming Dynasty.

The construction of the concave fort is to prevent enemy artillery from directly bombarding the central dike, and Triangle Fort is also the same. Both will be lower than the main fort, so as not to affect the artillery shooting on the main fort, forming cross-fire.

The function of hidden roads and garrison stations is the shelter, and the inclined dike is the outermost defensive fortification, and a larger inclination angle can maximize the power of cross firepower.

Overall, the structure of the brink of the brink is completely different from the existing city of the Ming Dynasty. Without a detailed drawing reference, it would be difficult for craftsmen to build a brink that meets Zhu Cilang's requirements.

Fortunately, Zhu Cixuan had done this research, and the structure of the prismatic building was deeply imprinted in his mind. It was not difficult to draw a main structure diagram.

Zhu Cixuan didn't want to delay any delay, so he immediately picked up his pen to outline the castle.

I have to admit that Zhu Cilang's sense of spatial structure is not good, and the bastion structure diagram he drew was not too beautiful, but fortunately he explained the main structure clearly.

Zhu Cilang has decided to build a group of peripheral bastions in northeastern Shandong. These bastions do not need to be built too large, each of which can accommodate two or three hundred people. Their function is to hold back the steps of the Qing Dynasty's going south and win time for Zhu Cilang to train new recruits.

Of course, this will cost a lot of money, but it is much cheaper than building a strong city, and the operation and maintenance costs are much lower, and it is worth it.

"Come here, summon the Minister of War Lu Zhenfei, and the Minister of Works Gao Hongtu to meet him!"

......

......

Wuchang, the Censorate Office.

Du Yinxi, deputy envoy of the Huguang Censorate, walked in the flower hall with his hands on his back, looking worried.

The day before yesterday, Eunuch Chen, who was sent by the court to send the imperial edict, arrived in Wuchang. All civil and military officials, including He Tengjiao, the governor of Huguang, and Zuo Liangyu, the general of Huguang, all came to the governor's office and set up an incense table to receive the imperial edict.

Du Yinxi is naturally among them.

Eunuch Chen read out the imperial edict in public, his voice slamming and stumbled, demonstrating his might.

As for the content, it was calm, and it was nothing more than commending the loyalty of He Tengjiao, Zuo Liangyu and others. It also promoted Zuo Liangyu to the title of Marquis of Ningnan from Ningnan.

After receiving the order, the governor He Tengjiao and Ningnan Hou Zuo Liangyu set up a welcome banquet to welcome Eunuch Chen. Except for He and Zuo, the other civil and military officials praised Eunuch Chen at the banquet, hoping to recognize Eunuch Chen as their godfather.

Although Du Yinxi was very disappointed with this, he didn't say much. Now this is the atmosphere in the Ming Dynasty's officialdom. Even if he stands up and opposes, it will be useless. It will also attract disgust from his colleagues and be excluded.

After three rounds of wine, five flavors of food. Eunuch Chen left the table first on the grounds of being drunk, and everyone dispersed one after another.

Du Yinxi also got into a sedan chair and returned to his residence to rest.

The next morning, Eunuch Chen went to He Tengjiao and Zuo Liangyu's residence in his private name.

Du Yinxi didn't find it strange at all. Eunuchs were greedy for money, so this eunuch Chen would naturally be no exception.

According to the convention in the officialdom, wherever the Shangguan goes, his subordinates should prepare a generous Chengyi to serve as a formula.

Eunuch Chen was the emperor who sent the imperial edict on behalf of the emperor, so he was naturally Shangguan. He and Zuo were representatives of Huguang civil officials and military generals. It is understandable that Cheng Yi was given each of them.

But then Eunuch Chen went to the private residence of the prefect of Wuchang, the governor of Huguang and other officials, and it seemed that he made a lot of money.

At that time, Du Yinxi made an evaluation to Eunuch Chen: the evil ghost in greed.

It seems that this Eunuch Chen will not give up if he doesn't ask all the officials in Huguang for a share. Du Yinxi has been in the officialdom for half his life, and there are no greedy people, but it is definitely the only one who is greedy for eunuch Chen.

Such a greedy person will naturally not forget Du Yinxi.

In fact, although Du Yinxi was the deputy envoy of the Huguang Censorate at this time, he was the actual official of the Censorate because his official position was always vacant. In addition, Du Yinxi was in charge of Wuchang's military preparations, so he could definitely be ranked among the top five in the Huguang officialdom. Eunuch Chen would naturally not let go of such a big fish.

When Du Yinxi learned that Eunuch Chen was coming, he ordered the housekeeper to prepare a copy of Cheng Yi, hoping to send the plague god away as soon as possible.

But who knew that when Eunuch Chen entered Du Yinxi's study, he did not rush to hint at Cheng Yi, but asked Du Yinxi to retreat.

Although Du Yinxi felt very strange, he still gave eunuch Chen the face and did as he did.

Eunuch Chen looked around and confirmed that there was no one, so he lowered his voice and ordered Du Yinxi to answer the order.

Du Yinxi was slightly stunned, and then he realized that the emperor had a secret order for him, so he quickly fell to the ground to receive the order.

Eunuch Chen took out a piece of paper as big as a palm from his close-fitting robe and spread it out to recite.

The content of the secret order is very short, with only one sentence: Zuo Zhen is domineering, and you can divide it and govern it.

It was such a simple sentence that made Du Yinxi excited.

The reason why he was excited was not because the emperor valued him and specially issued a secret order to him. It was because the emperor had the ambition to conquer Zuo Zhen!

As a loyal minister of the Ming Dynasty, Du Yinxi could no longer bear to see Zuo Liangyu's domineering arrogance. Unfortunately, He Tengjiao and Zuo Liangyu were having a hot fight. The two sang and reconciled, and outsiders had no chance to interrupt.

In addition, Zuo Liangyu has more than 200,000 troops under him, Du Yinxi dared not denounce Zuo Liangyu for causing bad political influence for the overall situation.

In his opinion, the court was also afraid of Zuo Liangyu, so he was promoted to him as a show of favor.

This is understandable. If the court has no soldiers in its hands, what can we do if we don’t cooperate with the warlords? Just live by the way.

But the moment he received the emperor's secret order, he realized that the current emperor is a heroic master with great talent.

The emperor looked at the problem thoroughly and analyzed it to the point.

Zuo Liangyu is domineering because he has many soldiers and generals.

But these soldiers and generals are not all Zuo Liangyu's direct lineage, and a large number of them were surrendered and incorporated.

Because of the different military pay and treatment, Zuo Liangyu's battalions have many conflicts, and they are definitely not a single piece of cake.

And the emperor’s strategy is to divide and govern it!

As long as Zuo Liangyu's tribe is divided, his strength will become weaker and the court will have a chance!

At this moment, Du Yinxi understood why Eunuch Chen wanted to go to the residence of a group of Huguang officials to "ask for Cheng Yi". This was to protect him, Du Yinxi, and avoid arousing Zuo Liangyu and He Tengjiao's suspicion of him. If Eunuch Chen went straight to Du Yinxi's residence, He Tengjiao and Zuo Liangyu would definitely notice it.

The emperor wanted to take Zuozhen, but he didn't want to alarm the enemy, so he had to issue two imperial edicts, one light and one dark.

......
Chapter completed!